The Georgia man accused of killing his toddler son after leaving him in the car appeared in court on Tuesday.

Justin Ross Harris of Marietta has been charged with murder in the death of his 22-month-old son Cooper, who was died on June 18, 2014 after being left in the car for seven hours with temperatures outside in the high 80s and no open windows.

Harris spent the day working at Home Depot where he was a web developer while also messaging multiple women who were not his wife - including an underage minor who he sent a photo of his erect penis.

In court, police said that Harris seemed calm at the crime scene and even made small talk with officers despite the fact that his son had just died.

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Trouble: Justin Ross Harris of Marietta, Georgia appeared in court on Tuesday (aove) facing murder charges for the death of his son

Tragedy: Cooper Harris (above with his father) was 22-months-old when he died after being left in the car for scene hours in June 2012 while he father went to work

No show: Leanna Harris (above), the estranged wife of the defendant, appeared in court for a July hearing last year (above) but was not there on Tuesday

Detective Phil Stoddard testified that he found Harris' behavior 'unusual,' especially when he told authorities he had 'no malicious intent' after his son was declared dead.

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Officers who first arrived on the scene however testified that Harris was combative, screaming expletives at members of the police.

Detective Jacquelyn Piper said he refused to get off his cell phone at the scene despite being asked to do so numerous times, and at one point screamed at an officer 'shut the f*ck up!'

It is unclear who he was speaking to however, as Piper later testified that Harris asked that she be the one to call and let his wife and give her the news.

Harris' lawyer had been trying to have parts of Harris' statements to police that day struck from the record, but the judge ultimately denied their motion.

Not good: Police testified in court Tuesday that he seemed calm at the scene and chatty, saying he has 'no malicious intent' in his son's death (Harris watching his police video in court Tuesday above)

Awful: Harris, who is married, spent his work day sending explicit messages to multiple women who were not his wife while Cooper (above) spent seven hours in the car as temperatures hit the high 80s

The murder charge is not the only one Harris faces, as he is also looking at time for other counts - including the photo of his erect penis he sent to an underage girl.

Cobb County Assistant District Attorney Chuck Boring has painted Harris as a man who potentially left his son in the car and wished to get out of his marriage and start a new childless life.

The prosecution has also recreated the manner in which Harris would have had to park his car at work, which would have involved looking over his shoulder they claim to back into a spot putting his son in his sight just before he exited the vehicle.

He will next appear in court on October 12 when the judge is expected to announce the start date for the trial.